I've not found other guides out there about this online, but I do know that there's ways to date a dupont lighter. The real question is what time frame each of these elements indicates. The first thing is that older duponts tend to say 'de Paris' rather than just 'Paris'. They also tend to have shorter 6-digit serial numbers rather than the 7-digit ones found on newer models. Older lighters will almost always have the older large square dupont emblem with 'ST Dupont' spelled out at the bottom and the circle with wings above it.
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If there is no refill cap, ask for the lighter to be weighted and check the weight. Limited edition lighters. Limited edition lighters are only created in small batches, and therefor will not contain a serial number stamped on the underside of them. Instead, they will contain the numbered piece that lighter is in the run that was commissioned. SOURCE: how do I check a premium bond number. It is worth the value printed on it! Premium bonds do not lose it purchase price. You can cash it in for the purchase price at anytime. To check if it has won any prizes go to the NS & I website and input the serial number. Posted on Oct 04, 2016. St Dupont Lighter Serial Number Check - 38bdf500dc 5 Mar 2014 - 2 min - Uploaded by bugboy332 Lighters bouth say. Lighters need 500 to 600 basic operations and around 70 parts, and the manufacturing cycle usually takes 4 to 5.